CUTTER HOLDER FOR SOIL TREATMENT MACHINE Russian patent published in 2016 - IPC E21C35/18 E21C35/19 

FIELD: machine building.

SUBSTANCE: group of inventions relates to soil processing machine cutter holders, in particular for road milling machine. Cutter holder in area of a processing side has a socket for cutter, insert projection of support element, support element has two bearing surfaces, which are located at an angle to each other and which form a pair of bearing surfaces. Support element has additional bearing surface, which is located at an angle to two bearing surfaces of pairs of bearing surfaces, where two pairs of bearing surfaces of bearing surfaces of cutter feed direction at least in some areas are arranged ahead of or behind plug-in ledge, and additional bearing surface at least in some areas is located in feed direction respectively behind or before insert ledge. Bearing surface of pairs of bearing surfaces and additional bearing surface make support guide with three surfaces so that bearing surface of pairs of bearing surfaces and additional bearing surface are located relative to each other in a pyramid-shaped manner.

EFFECT: technical result is providing stable and resistant configuration tool holder.

25 cl, 15 dwg